Author Question: How to rearrange formula for physics? (Read 1441 times)

curlz

  • Hero Member
  • *****
  • Posts: 538
I dont know how to rearrange, in general, so...

Acceleration= change of speed ÷ time taken

How wud u work out time taken. Thank u n plz explain step by step.

N if possible all the rearrangements in this formula, step by step!!

Thank u. :)



xclash

  • Hero Member
  • *****
  • Posts: 681
Reply #1 on: Oct 4, 2013
Just setting each variable to a symbol to represent it so its easier to type.
Acceleration: a
Change in speed: v
Time taken: t

So the original equation is

a=v/t
First you want to get t out of the denominator, this can be done by multipling each side by t resulting in

a(t)=v

The t in the denominator is cancelled out because t/t = 1 and v(1) = v

Next to get the t isolated you will need to divide both sides by a. This will result in

t=v/a

And similar to the step before the a is cancelled on the desired side.

Now the t is isolated this is your final equation.

Time taken = change in speed / acceleration



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

darbym82

  • Hero Member
  • *****
  • Posts: 570
Reply #2 on: Oct 4, 2013
Rearranging equations is a skill that you really need to learn.

Acceleration= change of speed ÷ time taken

multiply both sides of the equation by [time taken]

acceleration * time taken = change of speed * time taken ÷ time taken

{But anything divided by itself is just equal to 1}

acceleration * time taken = change of speed * 1

{Multiplying by 1 doesn't change anything}

acceleration * time taken = change of speed

{You normally write this with the single term on the left hand side, so the first rearrangement would be written as:}

change of speed = acceleration * time taken

Same idea again, this time divide both sides by acceleration

change of speed ÷ acceleration = acceleration * time taken ÷ acceleration

change of speed ÷ acceleration = time taken

time taken = change of speed ÷ acceleration



Yolanda

  • Hero Member
  • *****
  • Posts: 757
Reply #3 on: Oct 4, 2013
time will go to LHS & multiply.
so
acceleration x Time =change in speed
now transfr acceleration to RHS.it wil dvid
time=change in speed/acceleration



 

Did you know?

The training of an anesthesiologist typically requires four years of college, 4 years of medical school, 1 year of internship, and 3 years of residency.

Did you know?

Symptoms of kidney problems include a loss of appetite, back pain (which may be sudden and intense), chills, abdominal pain, fluid retention, nausea, the urge to urinate, vomiting, and fever.

Did you know?

Addicts to opiates often avoid treatment because they are afraid of withdrawal. Though unpleasant, with proper management, withdrawal is rarely fatal and passes relatively quickly.

Did you know?

In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.

Did you know?

Asthma occurs in one in 11 children and in one in 12 adults. African Americans and Latinos have a higher risk for developing asthma than other groups.

For a complete list of videos, visit our video library